A ray of light is incident on a convex mirror as shown. Redraw the diagram and complete the path of this ray after reflection from the mirror. Mark angle of incidence and angle of reflection on it.

Draw a ray diagram showing how a concave mirror can be used to produce a real, inverted and diminished image of an object.

What do you understand by the power of a lens? Name one factor on which the power of a lens depends.

An object is placed at a distance of 15 cm from a concave lens of focal length 30 cm. List four characteristics (nature, position, etc.) of the image formed by the lens.

1. How can you bend light away from the normal?
2. How must light travel out of a substance if it is not going to be refracted?

The letter F is placed in front of a plane mirror:

1. How would its image look like when seen in a plane mirror?
2. What is the name of the phenomenon involved?

Why does a ray of light passing through the centre of curvature of a concave mirror gets reflected along same path after reflection?

Draw ray diagrams showing the image formation by a convex lens when an object is placed:Between focus and twice the focal length of the lens.

What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror or convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25cm.

What is the difference between a real image and a virtual image? Give one example of each type of image.